Actually, you mentioned Western countries, not me. I never differentiated between "Western" and "Industrialized".
The links I showed were to show that UHC doesn't inherently mean lack of freedom of choosing what doctor you want to see.
The increase of Diabetes in the US absolutely has to do with healthcare. Saying it's only about diet is just wrong.
It all goes back to lack of access. Diseases like Diabetes and High Blood Pressure are often asymptomatic until advanced stages of progression. They develop over time and are often thus referred to as silent killers.
If you have a higher % of your population without any access to healthcare (and we have a higher % than any industrialized (not Western), it's far, far, far, FAR more likely that Diabetes and HBP and such are going to be discovered at later stages, be harder to treat, and thus end up affecting more people.
People in other industrialized countries live longer and healthier than America not only because of lifestyle, but very importantly because they go to doctors more often, receive more preventive care, and are able to nip problems in the bud earlier.
There's also an obvious correlation between going to a doctor regularly and acquiring the knowledge to alter and improve lifestyle habits which may be injurious to one's health, so in many ways lifestyle can be argued as a function of health care.
Having the brightest doctors in the World (which America probably does) doesnt mean you have the best healthcare system...
Good organizations don't just defend poor performance or results to be arrogant or proud. They look at what other organizations are doing better and emulate those practices or even improve upon them given the resources they already possess.
The first step is admitting you have a problem and we most certainly do!